Free Image Resizer

How to resize an image

1. 1

   Add your image

   Drag a JPG, PNG, WEBP or HEIC file into the box, or click to browse. Its current dimensions appear as soon as it loads.

2. 2

   Enter the size you want

   Type a width and height in pixels. Leave Lock aspect ratio on and the second field follows automatically. To scale instead, turn on Scale by percentage and enter a figure.

3. 3

   Resize and download

   Press Resize Image. The result shows the new dimensions and file size, ready to download.

Common image sizes in pixels

The dimensions people ask for most often. Type them straight into the width and height fields.

When to resize an image

• Uploading to social media

  Every platform has a size it prefers. Matching it means the platform does not re-compress your image on the way in.

• Speeding up a web page

  Serving an image at the size it is actually displayed is the single biggest saving available on most sites.

• Meeting a form's requirements

  Passport, visa and exam portals often specify exact pixel dimensions and reject anything that misses them.

• Emailing or messaging photos

  A 12-megapixel photo is overkill on a phone screen. Half the width is a quarter of the pixels.

Frequently asked questions

How do I resize an image without losing quality?

Scale down rather than up, and leave Lock aspect ratio on so the picture is not stretched. Reducing size is effectively lossless to the eye; enlarging beyond about 200% is where softness becomes visible. The result is re-encoded at a high quality setting, so no extra degradation is introduced.

Can I resize an image to exact dimensions like 600 × 600?

Yes. Turn off Lock aspect ratio and type both numbers. If the source is not already square, forcing it into a square will distort it — crop to 1:1 first, then resize the square to 600 × 600.

How do I resize a photo to 5 × 7, 8 × 10 or a size in cm?

Work out the pixels at print resolution. At 300 dpi a 5 × 7 inch print is 1500 × 2100 px and an 8 × 10 is 2400 × 3000 px. For centimetres, divide by 2.54 and multiply by 300 — a 10 × 15 cm print is about 1181 × 1772 px. Crop to the right shape first so nothing is stretched.

How do I resize an image by percentage?

Turn on Scale by percentage and enter a figure. 50% halves both sides, 200% doubles them. The width and height fields update to show the pixel size you will get.

Will resizing make the file smaller?

Almost always, and usually by a lot. File size roughly tracks pixel count, so halving both dimensions typically cuts the file to around a quarter.

Can I make an image bigger?

Yes, up to 16,384 pixels on a side. Bear in mind that no detail is added — the browser interpolates between the pixels you already have, so a heavily enlarged image looks softer than the original.

Is this an AI image resizer?

No, and for making images smaller you do not need one: scaling down is a precise job the browser does well. AI resizers, or upscalers, are for enlarging a small picture by inventing plausible detail. This tool enlarges by interpolation, which adds size but not detail.

Does it work with HEIC photos from an iPhone?

Yes. HEIC files are decoded on the way in and the resized image is saved as a JPG, because browsers cannot write HEIC.

Are my photos uploaded anywhere?

No. The resize happens on a canvas inside your browser tab. Nothing is sent to a server at any point.

Is there a limit on how many images I can resize?

No. There is no account and no daily allowance. Images are handled one at a time, and the page does not reload between them.